Sawing-machine



D. H. CiARK.

SAWiNG MALFHNE.

APPLICATiON FILED AF-V29, I917- Patented 111116 28, 1921.

4 SHEETS-SHEET 1.

Witness attoznc a;

D. H. CLARK.

SAWING MACHINE,

APPUCATION FILED MAY 29, 191T. 1,382,892. Patented June 218 1921.

4 SHEETSSHEET 2- D. H. CLARK.

SAWING MACHINE.

APPLICATION FILED MAY29.1917.

I 1,382,899 v Patentedlune 28,1921.

4 SHEETS-SHEET 3- D. H. CLARK.

SAWING MACHINE. v APPLICATiON FILED MAY 29. 191?.

1,382,892. PatentedJune 28,1921.

4 SHEETS-SHEET 4.

Show

BE 47m UNITED STATES PATENT OFFICE.

DAVID I-I. CLARK, 0F WAYNESVILLE, NORTH CAROLINA.

SAWING-MAGHINE.

Application filed May 29,

To all whom it may concern Be it known that 1, DAVID H. CLARK, a citizen of the United States, residing at Vaynesville, in the county of Haywood and State of North Carolina, have invented a new and useful Sawing-Machine, of which the following is a specification.

The device forming the subject matter of this application is a sawing machine of that type wherein a chain-saw, operating horizontally or nearly so, is employed for cutting standing timber.

The invention aims to provide a novel combination of parts whereby the saw may be adjusted, throughout a wide range, with respect to the timber which is to be cut.

l/Vithin the scope of what is claimed, a mechanic may work changes, without departing from the spirit of the invention, or placing the utility thereof in jeopardy.

In the accompanying drawings Figure 1 discloses, in top plan, a wood sawing machine constructed in accordance with the invention;

Fig. 2 is a rear end elevation of the machine;

Fig. 3 is a longitudinal section of the machine, parts being omitted, and parts appearin in section;

ig. 4 is a plan showing a part of the saw; and

Fig. 5 is an elevation wherein the saw is viewed edgewise.

Fig. 6 is a side elevation of the machine.

It is contemplated that the structure hereinafter claimed shall be capable of being, moved about from place to place, in order to operate upon the standing timber, and with this end in view, a vehicle or main frame 10 is provided, the same preferably being in the form of a simple sled embodying a forward end member 124 and a rear end member 121. A carrier 11, preferably in the form of a block, extends longitudinally of the vehicle 10 and is mounted on a bar 111, provided in its forward end, as shown in Fig. 3, with a slot 126. The rear end of the bar 111, which constitutes a part of the carrier 11, is supplied with a ball 120 mounted to rock in the rear end member 121 of the vehicle 10. On its forward end, the bar 111 is equipped with a ball 122 mounted to rock in a bearing 13, vertically adjustable in an arc of which the ball 120 is the center, in an arcuate guide 123 on the forward end Specification of Letters Patent. Patgnted June 28, 1921,

1917. Serial No. H1322.

member 124 of the vehicle 10 and sustained by braces 125. A rock shaft 14 is disposed transversely of the vehicle 10, near to the forward end thereof, and is journaled on the vehicle. @ne end of the rock shaft 14 is provided with a handle 16 carrying a latch mechanism 160, adapted to cooperate with a segment 161 mounted on one side portion of the'vehicle 10. Intermediate its ends, the rock shaft 14 is supplied with a crank 15 operating in the slot 126 of the bar 111 which constitutes a part of the carrier 11. A latch bar 17 extends transversely of the structure and is pivoted at 171 to the forward end of the carrier 11, above the axis represented by the balls 122 and 120 of the bar 111. The latch bar 17 has notches 172 in its lower edge, adapted to coact with a pin 173 carried by a bracket 18 mounted on one portion of the vehicle 10.

A standard 19 is erected on the rear end. of the carrier 1 and is provided with lower bearings 22 and with upper bearings 220. A horizontal drive shaft 20 is journaled in the lower bearings 22 and is operated by a pulley 25, splined to the shaft, the shaft having a longitudinal adjustment, as will be pointed out hereinafter. A spindle 21 is mounted in the upper bearings 220 for longitudinal adjustment, and includes an upstanding post 32. A vertical driven shaft 24 is provided, the same being journaled at its lower end in a yoke 23, wherein the drive shaft 20 is journaled, the upper end of the driven shaft 24 being journaled in a bearing 23' mounted on the end of the spindle 21. Beveled pinions 26, located within a yoke 23, form an operative con nection between the shafts 24 and 20, the yoke being carried by the said shafts.

A vertical rock shaft 27 is mounted in the standard 19 and is provided with arms 29, one of the upper bearings 220 being cut away, as shown. at 500 to receive the uppermost arm 29 when the shaft 27 is rocked. Links 30 and 300 are pivoted to the arms 29, and in the outer ends of the links, the driven shaft 24 is journaled for rotation. A lever 28 is secured to the upper end of the shaft 27 and is supplied with a latch mechanism 280, cooperating with a segment 281 secured to the upper end of the standard 19. A bell crank 31 is fulcrumed at 310 on the post 32 of the spindle 21 and is connected, at its outer end, by a link 330, with a rod 33,

mounted to slide loosely in the outer end of the link 300. The inner end of the bell crank 31 is connected to a link 34 pivoted to a lever 35 fulcrumed on thespindle 21 and provided with a latch mechanism 350, cooperating with a segment 351 The numeral 6 designates a V-shaped arm, the inner end of which is mounted to swing on the driven shaft 24, the arm being adjustable longitudinally of the shaft. A suitable connection 331 unites the lower end of the rod 33 with the arm6 in such a way that the rod may raise the arm 6 along the shaft 24, it being possible for the arm to swing, in a plane at right angles to the shaft 24, with respect to the connection 331.

The arm 6 is swung, as aforesaid,'through the instrumentality of a bar 40'pivoted at 400 to the arm and loosely received in a guide 41-on the standard 19. The arm 6 carries atits outer end, a sprocket wheel 8.

In the angle of the arm 6, a sprocket wheel 9 is journaled. A sprocket wheel 7 is mount ed .to rotate on the inner end of the arm 6, the sprocket wheel being splined to the driven shaft 24 so that, when the arm 6 is raisedon the driven shaft 24 by the rod 33, the sprocket wheel may slide along the shaft, an operative. driving connection being maintained, nevertheless, between the shaft and the sprocket wheel. About the sprocket wheels 7, 8 and 9, a chain-saw 1 is trained, the rearportion of the saw being housed in a guard170 carried by the arm. The saw has not been described in detail, because it may be of any construction, and because I am aware of the fact that any specific form of saw cannot be claimed in this application.

When the shaft 14 is rocked by means of the handle 16, the crank 15, operating in the slot 126 of the bar 111, swings the bar 111, and consequently the carrier 11, in a vertical plane, and in an arc of which the ball 120 is a center, the ball 122 moving in the bearing 13 and-the latter element reciproeating in the guide 123. It is possible, further, to rock the bar 111 and the carrier 11 transversely of the vehicle, with the axes of the balls 120 and 122 as a center, since in practice, the crank 15 does not fit so tightly'in the slot 126 as to make such an operation impossible. When the carrier 11 has been rocked transversely, as aforesaid,

the carrier may be held in adjusted positions, by engaging the notches 17 2 of the latch bar 17 with the pin 17 3 in the bracket 18, the carrier 11 thus being held in any position to which it may have been adjustedby trans verse swinging movement. At this point, it may be observed that the latch mechanism 160 on the handle 16 of the rock shaft 14 maybe engaged with the segment 161 to hold the forward end of the bar 111, and consequently the forward end of the carrier 11, in any position to which these parts on the spindle.

may have been adjusted by cooperation be tween the crank 15 of the rock shaft 14 and the slot 126 in the bar 111.

Rocking movement may be imparted to the shaft 27 by way of the lever 28, the latch mechanism 280 being engaged with the segment 281 to hold the shaft 27 in adjusted positions. When the shaft 27 is rocked, as aforesaid, the arms 29 actuate the links 300 and 30, these parts serving to move the shaft 24 inwardly and outwardly, the shaft 20 sliding endwise in the bearings 22 and the spindle 21 sliding endwise in the bearings 220. The saw arm 6, and consequently the saw 1, may be raised and lowered on the shaft 24 by a mechanism including the connection 331, the rod 33, the link 330, the bell crank 31, the link 34 and the lever 35, the latch mechanism 350 being engaged with the segment 351, as occasion may demand, to hold the arm 6 inany position to which it may have been adjusted. The

arm 6 may be swung in a plane at right angles to the shaft 24, and on the shaft, through the instrumentality of the bar 40 which is received loosely in the guide 41 on the standard 19. V

The driving mechanism is simple and ineludes the pulley 25 splined to the shaft 20, the shaft 20, the beveled pinions 26, the shaft 24, and the sprocket wheel 7 which is splined to the shaft 24, motion being imparted to the saw 1 by way of the said sprocket wheel.

There are live movements, in the various parts of the machine which regulate the position of the saw 1 with respect to the work: first, a swinging movement of the carrier 11 in a vertical plane, longitudinally of the vehicle 10, in a radius having its origin in the ball 120; second, a tilting movement of the carrier 11, transversely of the-vehicle 10, on a line connecting the centers of the balls 120 and 122; third, a movement of the shaft 24 and the arm 6, bodily, toward and away from the standard 19, in a direction at right angles to the axis of the shaft 24;

swinging the saw transversely of the shaft;

means for raising and lowering the saw on the shaft; means for connecting the saw operatively with the shaft; and mechanism for supporting the shaft on the carrier, said mechanism comprising means for moving the shaft transversely-with respect to the carrier. V

2. A wood sawing machine comprising a main frame; a carrier mounted to swing longitudinally thereon; means for raising and lowering one end of the carrier; an upright shaft; a saw mounted upon and driven by the shaft; means for swinging the saw transversely of the shaft; means for raising and lowering the saw on the shaft; and mechanism for supporting the shaft on the carrier, said mechanism including means for moving the shaft transversely, toward and away from the carrier.

3. A. wood sawing machine comprising a main frame; a carrier mounted to tilt transversely on the main frame and to swing 1ongitudinally thereon; a drive shaft and a spindle; means for mounting the drive shaft and the spindle on the carrier for sliding movement in the direction of their length; a driven shaft journaled in the spindle; means for connecting the shafts; an arm mounted to swing transversely on the driven shaft and to slide longitudinally thereof; means for sliding the arm longitudinally of the driven shaft; means for swinging the arm transversely of the driven shaft; a saw carried by the arm; a. rock shaft; means for mounting the rock shaft on the carrier; a crank arm on the rock shaft; and means con nected with the crank arm for moving the drive shaft and the spindle in the direction of their length.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

DAVID H. CLARK.

Witnesses:

SAM T. Evans, D. M. RUSSELL. 

